Application: akonadi_baloo_indexer (4.13)
KDE Platform Version: 4.13.0
Qt Version: 4.8.6
Operating System: Linux 3.13.0-24-generic x86_64
Distribution: Ubuntu 14.04 LTS

-- Information about the crash:
- What I was doing when the application crashed:  Twice the crash occurred while I was away from the computer.  The kde gui disappeared and could not be restarted with keyboard or mouse input.  Going to a konsole with ctrl-alt-F6 allowed starting kde with startx.  Once the crash assistant popped up during this ctrl-alt-F6 kde session, though that may have occurred because of the earlier crash.

- Unusual behavior I noticed:  Before this happened, I noticed that baloo was completely occupying one of the (eight, i7) cpu's for a long time after start-up, generating a lot of disk activity and hurting performance.

-- Backtrace:
Application: Akonadi Baloo Indexing Agent (akonadi_baloo_indexer), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  0x000000000040c522 in BalooIndexingAgent::slotItemsReceived (this=0x1226470, items=...) at ../../../../src/pim/agent/agent.cpp:424
#7  0x00007fdc955c787a in QMetaObject::activate (sender=0x11d6800, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fff503134c0) at kernel/qobject.cpp:3539
#8  0x00007fdc94c01782 in Akonadi::ItemFetchJob::itemsReceived(QList<Akonadi::Item> const&) () from /usr/lib/libakonadi-kde.so.4
#9  0x00007fdc94c02857 in Akonadi::ItemFetchJob::doHandleResponse(QByteArray const&, QByteArray const&) () from /usr/lib/libakonadi-kde.so.4
#10 0x00007fdc94c149a3 in ?? () from /usr/lib/libakonadi-kde.so.4
#11 0x00007fdc94c61f72 in ?? () from /usr/lib/libakonadi-kde.so.4
#12 0x00007fdc955c787a in QMetaObject::activate (sender=0x1221470, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3539
#13 0x00007fdc955c787a in QMetaObject::activate (sender=sender@entry=0x1236328, m=m@entry=0x7fdc95916540 <QIODevice::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#14 0x00007fdc95610720 in QIODevice::readyRead (this=this@entry=0x1236328) at .moc/release-shared/moc_qiodevice.cpp:104
#15 0x00007fdc90c1eccd in QAbstractSocketPrivate::canReadNotification (this=0x11ca540) at socket/qabstractsocket.cpp:654
#16 0x00007fdc90c27cfd in QReadNotifier::event (this=<optimized out>, e=<optimized out>) at socket/qnativesocketengine.cpp:1151
#17 0x00007fdc92a18e2c in QApplicationPrivate::notify_helper (this=this@entry=0x1018550, receiver=receiver@entry=0x1229290, e=e@entry=0x7fff50313aa0) at kernel/qapplication.cpp:4567
#18 0x00007fdc92a1f4a0 in QApplication::notify (this=this@entry=0x7fff50313d70, receiver=receiver@entry=0x1229290, e=e@entry=0x7fff50313aa0) at kernel/qapplication.cpp:4353
#19 0x00007fdc93723baa in KApplication::notify (this=0x7fff50313d70, receiver=0x1229290, event=0x7fff50313aa0) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007fdc955b34dd in QCoreApplication::notifyInternal (this=0x7fff50313d70, receiver=0x1229290, event=event@entry=0x7fff50313aa0) at kernel/qcoreapplication.cpp:953
#21 0x00007fdc955e14a8 in sendEvent (event=0x7fff50313aa0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 socketNotifierSourceDispatch (source=0x1018cf0) at kernel/qeventdispatcher_glib.cpp:117
#23 0x00007fdc913f9e04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fdc913fa048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fdc913fa0ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fdc955e07be in QEventDispatcherGlib::processEvents (this=0xfe2980, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#27 0x00007fdc92ababb6 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x00007fdc955b20af in QEventLoop::processEvents (this=this@entry=0x7fff50313ce0, flags=...) at kernel/qeventloop.cpp:149
#29 0x00007fdc955b23a5 in QEventLoop::exec (this=this@entry=0x7fff50313ce0, flags=...) at kernel/qeventloop.cpp:204
#30 0x00007fdc955b7b79 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#31 0x00007fdc94b59043 in Akonadi::AgentBase::init(Akonadi::AgentBase*) () from /usr/lib/libakonadi-kde.so.4
#32 0x000000000040ef43 in Akonadi::AgentBase::init<BalooIndexingAgent> (argc=<optimized out>, argv=<optimized out>) at /usr/include/akonadi/agentbase.h:454
#33 0x00007fdc91d15ec5 in __libc_start_main (main=0x409210 <main(int, char**)>, argc=3, argv=0x7fff50313e88, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff50313e78) at libc-start.c:287
#34 0x00000000004092a4 in _start ()

Reported using DrKonqi